Prosecutors said Tsarnaeva picked up someone who passed a counterfeit bill at a restaurant at a Boston mall and "lied about certain salient facts during the investigation."

At a hearing last October, Gormley said Tsarnaeva was pregnant with her second child and was unlikely to flee.

Tsarnaeva once lived in Cambridge, Massachusetts, at an apartment linked to her brothers, Dzhokhar and Tamerlan Tsarnaev, who were the subjects of an intense manhunt in the Boston area in the days after the deadly April 2013 marathon bombing.

Dzhokhar Tsarnaev is charged with building and planting the two pressure cooker bombs that exploded near the marathon's finish line, killing three people and injuring more than 260 others. He has pleaded not guilty.

Tamerlan Tsarnaev died after a gun battle with police.

Ailina Tsarnaeva told reporters from her New Jersey home shortly after the bombing that she had not spoken to her brothers in years.